*: Tossing a coin is a classical procedure for producing a random number .... Tossing a coin 20 times can produce any one of 2^{20} ... binary series, and each of them has exactly the same probability.

*: A random number is a precisely defined mathematical concept in which every number should have an equal likeliness of occurrence....

*: To randomize the selection process, a random number from 1 to 50 should be used ... This could be done, for example, by using the last two digits of the serial number on a dollar bill. If those digits were 87, subtract 50, leaving 37.

*: The generation of random numbers is too important to be left to chance.